Article includes a nice TL;DR<p>Thursday, @ 7:30 p.m. BATS prices its IPO at $16 a share, the low end of expected range. 6.3 million shares are priced.<p>Friday, 10:45 a.m.: BATS trading begins with trades occurring at BATS Exchange at $15:25, and seconds later trading stops due to technical issues.<p>10:48 a.m.: BATS says it is "investigating system issues" in all stock symbols between A and BFZZZ.<p>10:57: A trade on BATS in Apple shares sends stock falling 9.4% to $542.80. Trading halted.<p>11:02: Apple shares resume trading.<p>11:07: BATS declares "self help," an industry term meaning the exchange is having problems and other exchanges can stop routing orders to it.<p>11:14: BATS reopens trading of its stock and 1.2 million shares are executed at $15.25.<p>11:14: BATS shares route to Nasdaq and in seconds crash to pennies.<p>11:14: BATS shares halted.<p>11:53: BATS resolved issues regarding stocks with symbols A through BFZZZ.<p>11:55: "Self help" is revoked.<p>12:21 p.m.: BATS says it is cancelling all open orders in impacted stocks, and that trading would reopen for them at 12:50 p.m. It also says a "resume time" for its shares would be "communicated shortly."<p>12:41: BATS says it will restart trading of its shares at 1:20 p.m.<p>1:03: BATS says it will be "further delaying" trading of its stock.<p>3:10: BATS says its shares won't trade Friday.<p>3:42: BATS withdraws IPO.